Rastermikroskopische Untersuchungen der olfaktorischen Rezeptoren im Riechepithel des Goldfisches (Carassius auratus)

Breipohl, W.; Bijvank, Gerhard J.; Zippel, H. P.

doi:10.1007/bf00307104

Cited by 50 publications

(10 citation statements)

References 34 publications

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“…Grouping of ciliated receptor cells has been reported by Bertmar (1972) in sea trout. A similar grouping of microvillous receptor cells has been described by Breipohl et al (1973) in the goldfish. If morphology of receptor cells is related to specificity as suggested by Le Gros Clark (l957), it is conceivable that similar receptor cells in a cluster could have a clonal origin.…”

Section: Discussionsupporting

confidence: 74%

Morphology, distribution, and specificity of olfactory receptor cells in salmonid fishes

Thommesen¹

1983

Acta Physiologica Scandinavica

104

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Electrophysiological and anatomical investigations of the olfactory epithelium of three salmonid species have been coordinated. Different corridors in the olfactory rosettes were examined by recording of the electro-olfactogram (EOG) using two recording electrodes simultaneously against one common indifferent electrode. Biopsies comprising the two lamellae bounding each of the examined corridors were examined by scanning electron microscopy (SEM). The electrophysiological results confirm a higher relative density of bile salt-receptors in the peripheral parts of all the corridors, and a higher relative density of amino acid-receptors in central parts. The SEM micrographs show that ciliated receptor cells are more numerous than microvillous ones. The density of ciliated receptor cells increases towards the peripheral margin of each lamella. The density of microvillous receptor cells increases towards the central margin. The correspondence between the electrophysiological and the anatomical observations support the hypothesis that the ciliated receptor cells are those specific to bile salt-like substances, the microvillous those specific to amino acids.

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Section: Discussionsupporting

confidence: 74%

Morphology, distribution, and specificity of olfactory receptor cells in salmonid fishes

Thommesen¹

1983

Acta Physiologica Scandinavica

104

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“…Retzius (1892) and Ramon y Cajal(1911) illustrated bipolar receptor neurons, sustentacular cells, and the ducts of Bowman's glands in Golgi preparations of the newborn mouse. These general results were recently confirmed by Breipohl et al (1973) in the goldfish. Recent ultrastructural studies (Graziadei, 1973b;Graziadei and Monti-Graziadei, 1976;Simmons et al, 1981) suggested that the cell types found in the olfactory mucosa form discrete compartments whose shape and dimensions had been previously unrecognized in light microscopic studies.…”

supporting

confidence: 72%

Morphological relations between the receptor neurons, sustentacular cells and Schwann cells in the olfactory mucosa of the salamander

Rafols

Getchell

1983

Anat. Rec.

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The morphological characteristics of olfactory receptor neurons and their relations to the sustentacular cells and to the sheath cells of Schwann in the olfactory mucosa of the salamander (Ambystoma maculatum et tigrinum) were studied using a modification of the rapid Golgi technique. The bipolar receptor neurons had a fusiform-shaped cell body whose apical pole gave rise to a surface-reaching dendrite and a basal pole which gave rise to an axon. The length and width of the dendrite, although variable, were positively correlated with the relative depth at which the cell body was located in the sensory epithelium. Beyond the initial segment, the axon had a sinuous course prior to its entrance into the lamina propria. Within the lamina propria, the axons were associated with the sheath cells of Schwann to form the olfactory nerve fascicles. The processes of adjacent sheath cells formed an elaborate network of continuous cavities through which the axons coursed. Two morphologically distinct varieties of sustentacular cells, designated types I and II, were found in the sensory epithelium. Both types had a columnar profile consisting of an elongated cell body, a central stalk, and a basilar expansion of the stalk found at the junction of the epithelium with the lamina propria. The central stalk of type I sustentacular cells was unbranched, whereas that of type II cells gave rise to riblike processes from which cytoplasmic veils extended to envelop the cell bodies of receptor neurons. The basilar expansions were found in close apposition to the wall of capillaries or to acinar cells of Bowman's glands located in the most superficial region of the lamina propria. The morphological relationships and possible interdependencies among receptor neurons, the types of sustentacular cells, and the sheath cells are discussed.

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“…Ultrastructural and SEM-investigations indicate that the olfactory organs of goldfish (Breipohl et al 1973;Yamamoto and Ueda 1978;Muller and Marc 1984) and other teleosts (Bannister 1965;Schulte 1972;Yamamoto 1982;Cancalon 1983;Thommesen 1983;Theisen et al 1991 ;Zielinski and Hara 1992;Moran et al 1992) contain at least two types of olfactory receptors, ciliated and Abbreviations: EOG, electro-olfactogram; SEM, scanning electron microscopy (micrograph)…”

Section: Introductionmentioning

confidence: 99%

Ciliated olfactory receptor neurons in goldfish (Carassius auratus) partially survive nerve axotomy, rapidly regenerate and respond to amino acids

Zippel

Lago-Schaaf²,

Caprio

1993

J Comp Physiol A

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Abstract. Electro-olfactogram (EOG) recordings in response to amino acid stimulation were made from both control and experimental olfactory mucosae following unilateral axotomy. The recorded EOG amplitudes, amino acid stimulus relative effectiveness and dose-response relations for control and experimental mucosae were comparable in all pre-and postoperative recordings. Semi-thin investigations of olfactory mucosae showed degeneration of olfactory receptors but indicated that intact receptors were also present. SEM of olfactory mucosae revealed that ciliated receptor cells were present in both axotomized and control sides on postoperative days, whereas microvillous receptors completely degenerated and did not regenerate until 7 weeks post axotomy. The present findings along with previous behavioral observations suggest at least three possible sources of the EOGs recorded from the experimental olfactory mucosae following olfactory nerve transection: (1) young olfactory receptor neurons whose axons had not yet reached the region of the transected olfactory nerve; (2) newly-emerged olfactory receptor neurons; and (3) olfactory receptor neurons that had not degenerated.

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Rastermikroskopische Untersuchungen der olfaktorischen Rezeptoren im Riechepithel des Goldfisches (Carassius auratus)

Cited by 50 publications

References 34 publications

Morphology, distribution, and specificity of olfactory receptor cells in salmonid fishes

Morphology, distribution, and specificity of olfactory receptor cells in salmonid fishes

Morphological relations between the receptor neurons, sustentacular cells and Schwann cells in the olfactory mucosa of the salamander

Ciliated olfactory receptor neurons in goldfish (Carassius auratus) partially survive nerve axotomy, rapidly regenerate and respond to amino acids

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